Physics

Choose the Correct Answer

Correct Answer : Option a

Explanation
Statement-I is correct: LIGO is the world's largest gravitational wave observatory and a marvel of precision engineering. Comprising two enormous laser interferometers located 3000 kilometers apart, LIGO exploits the physical properties of light and of space itself to detect and understand the origins of gravitational waves (GW).The Laser Interferometer Gravitational-wave Observatory (LIGO) does not observe electromagnetic radiation such as visible light, radio waves, or microwaves, unlike traditional optical or radio telescopes.

Statement-II is correct: Gravitational waves are not part of the electromagnetic spectrum but are ripples in spacetime caused by massive celestial events like black hole mergers or neutron star collisions.

Statement-II correctly explains Statement-I because LIGO is designed to detect gravitational waves, which are entirely different from electromagnetic radiation. Since gravitational waves do not emit electromagnetic signals, LIGO does not rely on electromagnetic observations but instead measures minute distortions in spacetime caused by passing gravitational waves.